16224140 has 12 divisors (see below), whose sum is σ = 34070736. Its totient is φ = 6489648.

The previous prime is 16224127. The next prime is 16224149. The reversal of 16224140 is 4142261.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 811207 = 16224140 / (1 + 6 + 2 + 2 + 4 + 1 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (16224149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405584 + ... + 405623.

It is an arithmetic number, because the mean of its divisors is an integer number (2839228).

Almost surely, 2^16224140 is an apocalyptic number.

16224140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16224140 is an abundant number, since it is smaller than the sum of its proper divisors (17846596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16224140 is a wasteful number, since it uses less digits than its factorization.

16224140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811216 (or 811214 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 16224140 is about 4027.9200587896. The cubic root of 16224140 is about 253.1554190949.

The spelling of 16224140 in words is "sixteen million, two hundred twenty-four thousand, one hundred forty".